Etymology and distribution of 深吉.

Fukayoshi 【深吉】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Nagano-ken , Aichi-ken , Hyougo-ken . Creation . Nagano - ken Shimoina - gun Anan - chou In Tobusu, tell her that Mr. Sugawara gave her a lady to the Emperor and was appointed as the "Imperial High Priest". Estimated in the Kamakura period. Meaning "no problem". 菅原 Sugawara reference.